Mountain resort image
– Lat/Long: 48.71° N 121.99° W

South Twin Sister Weather Forecast

Cascade Range · United States
Issued: 4 am Wed 23 Sep Local Time
Updates in:
hr min s
Update imminent

Days 1–3 Weather Summary

Heavy rain (total 36mm), heaviest during Fri afternoon. Very mild (max 16°C on Thu afternoon, min 7°C on Fri night). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Very mild (max 15°C on Sun afternoon, min 7°C on Sat morning). Wind will be generally light.

Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
part cloud
rain showers
rain showers
cloud
light rain
heavy rain
mod rain
mod rain
mod rain
rain showers
rain showers
part cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
some clouds
rain shwrs
rain shwrs
cloudy
light rain
heavy rain
mod. rain
mod. rain
mod. rain
rain shwrs
rain shwrs
some clouds
cloudy
some clouds
some clouds
clear
some clouds
some clouds
Cloud base (m)
2050
1750
6400
3200
2700
550
750
600
600
650
1800
6350
6100
5900
8300
7400
km/h
5
SSW
5
SW
5
E
0
SW
0
W
5
SE
10
S
10
SW
10
SW
5
SSW
5
NNW
5
ENE
0
ESE
5
WNW
0
ENE
5
W
5
W
0
ESE
Weather map
Weather map
Weather map
Weather map
Weather map
Weather map
Snowflake cm
 mm
0.5
0.1
0.4
13
6
6
10
0.4
0.2
max °C
12
13
11
15
16
12
12
10
8
8
12
8
13
15
11
12
14
11
min °C
11
13
10
12
13
11
11
8
7
7
11
8
9
15
9
8
13
10
 chill °C
11
13
10
12
13
10
10
7
6
7
11
8
9
15
9
8
13
10
Freezing level m
2300
2450
3150
2900
2650
2500
2200
1750
1650
1650
2200
2550
2650
2700
2650
2650
2800
2850
Sea lvl1000m2000m3000m4000m5000m
1235431-1-3-3-1233323355788652114567745612131114151212988128111510101411
Sunrise
6:54
6:56
6:58
6:58
7:01
7:01
Sunset
7:04
7:01
7:00
6:58
6:54
6:52

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South Twin Sister Weather (Days 0-3):

The weather forecast for South Twin Sister is: Heavy rain (total 36mm), heaviest during Fri afternoon. Very mild (max 16°C on Thu afternoon, min 7°C on Fri night). Wind will be generally light.

South Twin Sister Weather (Days 3-6):

Mostly dry. Very mild (max 15°C on Sun afternoon, min 7°C on Sat morning). Wind will be generally light.

This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.

Live conditions reported by 10 closest weather stations

Weather StationTemp.WeatherWindGusts
Cloud
Visibility
Cloud / Visibility
34 km WSW
100m alt.
41 minutes ago
12°C
Dry
0
Calm
(0 kph at 0).
3
SHIP3622
38 km WSW
3m alt.
3 hours ago
SHIP5153
38 km WSW
15m alt.
3 hours ago
- km
SHIP6946
38 km WSW
3m alt.
2 hours ago
SHIP7130
38 km WSW
15m alt.
3 hours ago
- km
SHIP6774
38 km WSW
15m alt.
2 hours ago
- km
SHIP8266
38 km WSW
15m alt.
3 hours ago
- km
SHIP4769
38 km WSW
15m alt.
2 hours ago
- km
SHIP4405
38 km WSW
15m alt.
3 hours ago
- km
SHIP4053
38 km WSW
15m alt.
2 hours ago
- km

* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.